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This engine is driven by the temperature differential between the top and bottom plates. To make temperature differential, simply put it on a cup of hot water or on top of ice. The speed depends on the temperature differential: the higher, the faster. It can reach a speed around 220-250 RPM when in good condition.
This product complies with the applicable regulations and standards under CPSIA and any other acts enforced by CPSC. It passed ASTM-F963 Standard Customer Safety Specification For Toy Safety Toxic Elements Test/Flammability Test/Physical and Mechanical Test.
Please note that we detached the flywheel from the stand to ensure its safety while shipping. It is easy to put it back.
What's it for:
*Kids' science project
*Put on your table
*You want to spend money but don't want to spend too much
Speed: 60-220 RPM(revolutions per minute)
Operating temperature differential: about 54-63°F
Continuous rotation time on a cup of boiling water: about 30-50 minutes
Material: carbon steel, nickel-plated carbon steel, stainless steel, glass, bronze, PVC foam and plastics*
Overall size: 4.06x4.06x4.92 inch (L/W/H)
Size of flywheel: 3.43x0.23 inch (Diameter/Thickness)
Inner diameter of power cylinder: 0.61 inch
Net Weight: 0.52 lb
*User manual x1
Stirling engine is traditionally classified as an external combustion engine. Please refer to wikipedia for more information.